• 文献标题:   A transparent cobalt sulfide/reduced graphene oxide nanostructure counter electrode for high efficient dye-sensitized solar cells
  • 文献类型:   Article
  • 作  者:   HUO JH, WU JH, ZHENG M, TU YG, LAN Z
  • 作者关键词:   dyesensitized solar cell, counter electrode, hydrothermal method, transparent, sulfide cobalt/reduced graphene oxide
  • 出版物名称:   ELECTROCHIMICA ACTA
  • ISSN:   0013-4686 EI 1873-3859
  • 通讯作者地址:   Huaqiao Univ
  • 被引频次:   20
  • DOI:   10.1016/j.electacta.2015.11.071
  • 出版年:   2016

▎ 摘  要

A transparent nanostructured cobalt sulfide/reduced graphene oxide (CoS/rGO) hybrid film is prepared by a simple hydrothermal method in alkaline solution and is used as counter electrode (CE) for dyesensitized solar cell (DSSC). The surface morphology and micro structures of film are characterized by field emission scanning electron microscopy and Raman spectroscopy. The electrochemical properties of the CEs are measured by cyclic voltammetry, electrochemical impedance spectroscopy and Tafel tests. The photovoltaic performance of the DSSCs with CoS/rGO CEs is investigated. Owing to good transmission conductivity and electrocatalytic activity for CoS/rGO film, the DSSC based on CoS/rGO CE with the thickness of 72 nm achieves power conversion efficiency (PCE) of 9.82% and 8.38% under white light irradiation of 100 mW cm (2) (AM 1.5 G) from the front and back illumination, which are higher than the PCE of DSSC with Pt CE. The results indicate that CoS/rGO hybrid film is a low-cost, Pt-free and high efficient CE for DSSCs. (C) 2015 Elsevier Ltd. All rights reserved.